Liangshan Shao

Sep 12, 2023 | mdpi.com | Liangshan Shao |Wenjing Chen

4. Experimental Results and AnalysisPre-fill and post-fill datasets for prediction testing were constructed; the division ratio of training set to test set was 8:2. PHHO–KELM model prediction was implemented in MATLABR2021b. The PHHO population size was set to 30, the maximum number of iterations was 100 and the radial basis ‘RBF_kernel’ was used as the activation function.

Sep 1, 2023 | mdpi.com | Jinhui Yang |Jin Zhao |Liangshan Shao

3.1. Bayesian Network Parameters(1)Prior probability of root nodeTen evaluators conducted field research in Wangzhuang coal mine. After fully grasping the situation of Wangzhuang coal mine, they judged the risk factors according to the trapezoidal fuzzy theory of seven levels of language variables and calculated the prior probabilities of each root node of the Bayesian network, as shown in Table 7.